It isn't dissent we're blocking, Khyber. You were on a rant. Since we keep detailed logs of our IRC, anyone can see what you did to get quieted, and then banned. I'd invite anyone interested to check our IRC logs, starting here. That got you a mute.
You then made threats about a DDOS attack on our site to one of our channel operators via pm. That's what got you banned. I'll note you can still access the main site.